Charles Ellicott Commentary Acts 11:17

"If then God gave unto them the like gift as [he did] also unto us, when we believed on the Lord Jesus Christ, who was I, that I could withstand God?" — Acts 11:17 (ASV)

Forasmuch then . . . — More accurately, If then.

Unto us, who believed on the Lord Jesus Christ. — The Greek construction gives a somewhat different meaning: If then God gave to them an equal gift as to us, upon their believing . . . That condition was sufficient in their case for the greater gifts, and their admissibility to baptism and to general fellowship followed naturally as a matter of course.

What was I, that I could withstand God? — The Greek gives a complex question, Who was I? Able to withstand God? — i.e., How was I, being who I am, able to withstand?